PDF malware analysis — malicious · b6f4d51c32e807bb

MALICIOUS

PDF

7.4 KB Created: 2012-10-11 16:07:47

MD5: bd522cb5f9907b02dd58116ae876f04a SHA-1: 76e3664c40ad37ddf69924beb9b272f269b1eb5f SHA-256: b6f4d51c32e807bbad96c156e877f68a1f7ffa1d451a4becb828e6ed5e0518d7

68 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains an embedded script payload, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. The ML classifier also strongly flagged this PDF as malicious. The embedded artifact 'embedded_file_obj0004.bin' is likely the secondary payload. The document body text is heavily truncated and appears to be corrupted or irrelevant.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0004.bin` `25c1ed23dec2ab0cefbd33a17242418476fd26256a7d9fed4123cd75cd55b437`	pdf-embedded-file	PDF EmbeddedFile object 4 at offset 0xC97	6863 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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